Thomas Knox, 3rd Earl of Ranfurly

Thomas Knox, 3rd Earl of Ranfurly (13 November 1816 – 20 May 1858), styled Viscount Northland between 1840 and 1858, was an Irish peer and member of parliament.

Early life Knox was born on 13 November 1816 as the eldest son of Thomas Knox, 2nd Earl of Ranfurly and his wife Mary Juliana Stuart, Lady Louisa Juliana Knox (wife of Henry Alexander), and Lady Juliana Caroline Frances Knox (wife of Gen. Sir Edward Forestier-Walker).

His paternal grandparents were Thomas Knox, 1st Earl of Ranfurly, and the Hon. Diana Jane Pery (a daughter of the 1st Viscount Pery).

He was educated at St John's College, Cambridge.

In 1834 he travelled on a Grand Tour to Greece and Asia Minor under the supervision of Rv. Richard Burgess, together with John Butler Clarke (1813-1856), and George Paget.

Career He succeeded his father to represent Dungannon as a Member of Parliament between 9 June 1838 and 3 February 1851, when he resigned through the position of Steward of the Chiltern Hundreds due to ill health. He was succeeded by his younger brother, William.

He succeeded to the title of 4th Baron Welles of Dungannon, County Tyrone on 21 March 1858, as well as the title of 3rd Earl of Ranfurly, the title of 3rd Baron Ranfurly of Ramphorlie, County Renfrew, and the title of 4th Viscount Northland of Dungannon, County Tyrone. He continued as earl for only two months, dying on 20 May 1858. who married Hon. Constance Elizabeth Caulfeild, the only child of James Caulfeild, 7th Viscount Charlemont and Hon. Annetta Handcock (a daughter of 3rd Baron Castlemaine), in 1880.